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Interlayer-bonded Ni/MoO2 electrocatalyst for efficient hydrogen evolution reaction with stability over 6000 h at 1000 mA cm−2

Author

Listed:
  • Anrui Dong

    (Westlake University
    Westlake Institute for Advanced Study)

  • Gaoxin Lin

    (Westlake University
    Westlake Institute for Advanced Study)

  • Zhiheng Li

    (Westlake University
    Westlake Institute for Advanced Study)

  • Wen Wu

    (Westlake University
    Westlake Institute for Advanced Study)

  • Xing Cao

    (Westlake University
    Westlake Institute for Advanced Study)

  • Wenlong Li

    (Westlake University
    Westlake Institute for Advanced Study)

  • Linqin Wang

    (Westlake University
    Westlake Institute for Advanced Study)

  • Yilong Zhao

    (Westlake University
    Westlake Institute for Advanced Study)

  • Dexin Chen

    (Westlake University
    Westlake Institute for Advanced Study)

  • Licheng Sun

    (Westlake University
    Westlake Institute for Advanced Study
    Zhejiang Baima Lake Laboratory Co., Ltd.)

Abstract

The mechanical stability of the catalytic electrodes used for hydrogen evolution reactions (HER) is crucial for their industrial applications in anion exchange membrane water electrolysis (AEM-WE). This study develops a corrosion strategy to construct a self-supported electrocatalyst (Int-Ni/MoO2) with high mechanical stability by anchoring the Ni/MoO2 catalytic layer with a dense interlayer of MoO2 nanoparticles. The Int-Ni/MoO2 exhibits a strengthened homostructural interface between the interlayer and catalytic layer, preventing the detachment of the catalyst during ultrasonic treatment. The blade-shaped catalytic layer reduces bubble shock and potential fluctuations at high current densities up to −6000 mA cm−2. As a result, the Int-Ni/MoO2 electrode exhibits a low overpotential of 73.2 ± 14.2 mV and long-term stability for 6000 h at −1000 mA cm−2 in a 1 M KOH solution. The Int-Ni/MoO2 assembled AEM-WE device demonstrates long-term stability at 1000 mA cm−2 for 1000 h with a very low degradation rate of 3.96 µV h−1.

Suggested Citation

  • Anrui Dong & Gaoxin Lin & Zhiheng Li & Wen Wu & Xing Cao & Wenlong Li & Linqin Wang & Yilong Zhao & Dexin Chen & Licheng Sun, 2025. "Interlayer-bonded Ni/MoO2 electrocatalyst for efficient hydrogen evolution reaction with stability over 6000 h at 1000 mA cm−2," Nature Communications, Nature, vol. 16(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-025-59933-6
    DOI: 10.1038/s41467-025-59933-6
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    References listed on IDEAS

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